Seven of the men, almost half the study group, were found to host microbes that posed a threat to human health.

The study was conducted to see if humans could catch doggy diseases after sharing MRI machines. The surprising findings showed that after the dogs used the MRI scanners and they had been disinfected, there was a significantly lower bacteria count compared with levels seen when the machines were used by humans.

It is believed no dogs caught diseases from the humans’ dirty beards during this experiment.